| natural(adjective, calm, open, smooth, simple) |
| simple(adjective, open, easy, natural, casual) |
| willed(adjective, feature, characteristic, free, regard) |
| automatic(adjective, simple, natural, casual, impulsive) |
| chosen(adjective, feature, characteristic, free, deliberate) |
| unbidden(adjective, free, simple, keen, happy) |
| unpretentious(adjective, calm, open, smooth, simple) |
| unstrained |
| unstudied(adjective, open, simple, easy, loose) |
| discretionary(adjective, open, free, voluntary, elective) |
| elective(adjective, open, free, voluntary) |
| freely(adjective, feature, characteristic, free, deliberate) |
| genuine(adjective, feature, characteristic, open, smooth) |
| impulsive(adjective, open, simple, easy, natural) |
| modest |
| unassuming |
| uncompensated(adjective, feature, characteristic, regard, unrewarded) |
| unpaid(adjective, feature, characteristic, free, deliberate) |
| witting(adjective, free, keen, happy, agreeable) |
| amenable(adjective, calm, keen, happy, informal) |